Hi all, After merging the block tree, today's linux-next build (x86_64 allmodconfig) failed like this: drivers/block/xen-blkback/xenbus.c: In function 'xen_blkbk_discard': drivers/block/xen-blkback/xenbus.c:578:31: error: unused variable 'q' [-Werror=unused-variable] 578 | struct request_queue *q = bdev_get_queue(bdev); | ^ cc1: all warnings being treated as errors Caused by commit c899b2353386 ("xen-blkback: use bdev_discard_alignment") I have applied the following fix patch for today. From: Stephen Rothwell Date: Wed, 4 May 2022 11:26:59 +1000 Subject: [PATCH] xen-blkback: remove unused variable Fixes: c899b2353386 ("xen-blkback: use bdev_discard_alignment") Signed-off-by: Stephen Rothwell --- drivers/block/xen-blkback/xenbus.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index 04c90cb8955f..97de13b14175 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -575,7 +575,6 @@ static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info int err; int state = 0; struct block_device *bdev = be->blkif->vbd.bdev; - struct request_queue *q = bdev_get_queue(bdev); if (!xenbus_read_unsigned(dev->nodename, "discard-enable", 1)) return; -- 2.35.1 -- Cheers, Stephen Rothwell